The Canon MP-E 65 mm f/ 2.8 1-5x Macro Photo is a unique macro-only lens with manual focusing. The lens features the range of 1x to 5x magnification, i. e. from a life-size to 5x magnification when a 7 mm object fills a 35 mm frame. Don't confuse it with a 1:5 magnification - it is 25 times as small.
The floating system uses three groups of elements and provides variable magnification throughout the macro range. The lens effectively corrects fluctuation of aberration that accompanies magnification change. The second UD lens minimizes the secondary spectrum, which is a great problem for high magnification macrophotography, ensuring excellent image quality.
The Canon MP-E 65mm f/2.8 1-5x Macro Photo comes completed with a detachable tripod mount which makes it possible to gradually pass from vertical to horizontal shooting and which provides a reliable support. For fine focusing it is recommended to use macro focusing rails which are available on sale. There is an inverse relationship between a lens working distance and a magnification factor. With a maximum magnification a working distance is approximately 43 mm, which may cause problems when shooting. With a maximum magnification and closed aperture the lens depth of field is approximately 0.25 mm.
While raising the magnification factor, effective aperture decreases in size, thus increasing an f-number, that is why it is recommended to use exposure compensation or a flash. The use of auto exposure at all magnifications (1x – 5x) is possible on some cameras only, a laser-matte screen is required. For other cameras the compensation is required as given in the table in the user's manual (from +2 to +5 stops).
The specifications of the Canon MP-E 65mm f/2.8 1-5x Macro Photo
manual focusing, linear extension of the front group
diagonal angle of view 18° 40’ at 1:1
maximum diameter 81 mm
compatibility with the Macro Ring Lite ML-3 and the new MR-14EX or the Macro Twin LiteMT-24EX
removable tripod collar with smooth rotation and reliable lock button
3-group floating system, including a UD glass element
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Posted by: dv Date of publication: 23.09.2010